/* Copyright 2009 - 2010 The Stajistics Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.stajistics.jdbc.wrapper;

import java.sql.ResultSet;
import java.sql.SQLException;

import org.stajistics.Stats;
import org.stajistics.StatsFactory;
import org.stajistics.StatsKey;
import org.stajistics.jdbc.StatsJDBCConfig;
import org.stajistics.jdbc.decorator.AbstractResultSetDecorator;
import org.stajistics.tracker.span.SpanTracker;

/**
 *
 * @author The Stajistics Project
 *
 */
public class StatsResultSetWrapper extends AbstractResultSetDecorator {

    private static StatsFactory statsFactory = Stats.getFactory(StatsResultSetWrapper.class);
    
    private final StatsJDBCConfig config;

    private final SpanTracker openClosedTracker;

    public StatsResultSetWrapper(final ResultSet delegate,
                                 final StatsJDBCConfig config) {
        super(delegate);

        if (config == null) {
            throw new NullPointerException("config");
        }

        this.config = config;

        StatsKey openClosedKey = statsFactory.buildKey(ResultSet.class.getName())
                                             .withNameSuffix("open")
                                             .newKey();

        openClosedTracker = statsFactory.track(openClosedKey);
    }

    @Override
    public void close() throws SQLException {
        try {
            super.close();
        } finally {
            openClosedTracker.commit();
        }
    }

}
